re PR tree-optimization/70916 (gcc ICE at -O3 on valid code on x86_64-linux-gnu…

re PR tree-optimization/70916 (gcc ICE at -O3 on valid code on x86_64-linux-gnu in "tree_operand_check")

	PR tree-optimization/70916
	* tree-vect-patterns.c (vect_recog_mask_conversion_pattern): Give up
	if COND_EXPR rhs1 is neither SSA_NAME nor COMPARISON_CLASS_P.

	* gcc.c-torture/compile/pr70916.c: New test.

From-SVN: r235814

gcc/ChangeLog

 2016-05-03  Jakub Jelinek  <jakub@redhat.com>
 
+	PR tree-optimization/70916
+	* tree-vect-patterns.c (vect_recog_mask_conversion_pattern): Give up
+	if COND_EXPR rhs1 is neither SSA_NAME nor COMPARISON_CLASS_P.
+
 	PR target/49244
 	* tree-ssa-ccp.c: Include stor-layout.h and optabs-query.h.
 	(optimize_atomic_bit_test_and): New function.

gcc/testsuite/ChangeLog

 2016-05-03  Jakub Jelinek  <jakub@redhat.com>
 
+	PR tree-optimization/70916
+	* gcc.c-torture/compile/pr70916.c: New test.
+
 	PR target/49244
 	* gcc.target/i386/pr49244-1.c: New test.
 	* gcc.target/i386/pr49244-2.c: New test.

gcc/testsuite/gcc.c-torture/compile/pr70916.c

+/* PR tree-optimization/70916 */
+
+int a, b, c, d, i, k;
+int static *e = &b, *j;
+int **f;
+int static ***g = &f;
+int *h;
+void
+fn1 ()
+{
+  for (;;)
+    {
+      int l[1] = { };
+      int m = (__UINTPTR_TYPE__) l;
+      for (; d; d--)
+	{
+	  int ****n;
+	  int *****o = &n;
+	  i = a & 7 ? : a;
+	  *e = (((*o = &g) != (int ****) g) < h[c], 0) || k;
+	  if (*e)
+	    {
+	      **n = &j;
+	      *e = (__UINTPTR_TYPE__) h;
+	    }
+	}
+    }
+}

gcc/tree-vect-patterns.c

@@ -3673,8 +3673,10 @@ vect_recog_mask_conversion_pattern (vec<gimple *> *stmts, tree *type_in,
 	  if (!rhs1_type)
 	    return NULL;
 	}
-      else
+      else if (COMPARISON_CLASS_P (rhs1))
 	rhs1_type = TREE_TYPE (TREE_OPERAND (rhs1, 0));
+      else
+	return NULL;
 
       vectype2 = get_mask_type_for_scalar_type (rhs1_type);